title: Oral micronized progesterone for prevention of preterm birth.
abstract: OBJECTIVE
  To evaluate oral micronized progesterone (OMP) to prevent preterm birth (PTB).
  
  
  METHODS
  A randomized, double-blind, placebo-controlled trial of 150 women with at least one PTB who received 100 mg of OMP or placebo twice a day from recruitment (18-24 weeks) until 36 weeks or delivery.
  
  
  RESULTS
  PTB occurred in 29 (39.2%) women in the OMP group (n=74) compared with 44 (59.5%) in the control group (n=74, P=0.002). Mean gestational age at delivery was higher in the OMP group (36.1 vs 34.0 weeks, P<0.001). Fewer preterm births occurred between 28 and 31 weeks plus 6 days in the OMP group (RR 0.20; 95% CI, 0.05-0.73, P<0.001). Neonatal age at delivery (34 vs 32 weeks, P<0.001), birth weight (2400 vs 1890 g, P<0.001), NICU stay (>24 h, P<0.001), and Apgar scores (P<0.001) were more favorable in the OMP group, and fewer neonatal deaths occurred (3 vs 7, P=0.190).
  
  
  CONCLUSIONS
  OMP reduced the risk of PTB between 28 and 31 weeks plus 6 days, NICU admissions, and neonatal morbidity and mortality in high risk patients.
authors.affiliation: Department of Obstetrics and Gynecology, University College of Medical Sciences and Guru Teg Bahadur Hospital, Delhi, India.
authors.forename: Pushpanjali
authors.initials: P
authors.lastname: Rai
authors.forename: Shalini
authors.initials: S
authors.lastname: Rajaram
authors.forename: Neerja
authors.initials: N
authors.lastname: Goel
authors.forename: Radhika
authors.initials: R
authors.lastname: Ayalur Gopalakrishnan
authors.forename: Rachna
authors.initials: R
authors.lastname: Agarwal
authors.forename: Sumita
authors.initials: S
authors.lastname: Mehta
mesh_terms: D000284:Administration, Oral; D000328:Adult; D005260:Female; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D007234:Infant, Premature; D007363:Intensive Care Units, Neonatal; D053769:Nanocapsules; D011247:Pregnancy; D011262:Pregnancy Trimester, Second; D047928:Premature Birth / Q000517:prevention & control*; D011374:Progesterone / Q000008:administration & dosage*; D011372:Progestins / Q000008:administration & dosage*; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D053769:Nanocapsules; D011372:Progestins; D011374:Progesterone